Unsubscribing to newsletter and promotions is now a lot easier in Gmail. Now when a sender includes an "Unsubscribe" link in an email, Gmail will surface it to the top, right next to the sender address.
Example screenshot:
Making the unsubscribe option easy to find is a win for everyone. For email senders, their mail is less likely to be marked as spam and for you, you can now say goodbye to sifting through an entire message for that one pesky link.